Sash-lock.



L. E. BUBENHElM.

SASH LOCK.

APPLlCATlON FILED MAYH, 1914.

- awe/"4 M L,E BUBENHE1M Patented July 20, 1915. V

s Patent FFEQE;

SASH-LOGK.

Specification of Letters Patent.

Patented July 29, 1915.

Application filed May 14, 1914. Serial N 0. 838,603.

To all whom it may concern: Be it known that I, LOUIS EDGAR BUBnN- HEIM, a citizen of the United States, reslding at Dormont, Pittsburgh, in the county of Allegheny and State'of Pennsylvania, have invented certain new and useful Improvements in Sash-Locks, of Which the following is a specification, reference being had to the accompanying drawings.

' This invention relates to sash locks and it has for its primary object the provision of a lock of this character which may be readily applied to the sashes and which will consist of mating and coiiperating parts that may be controlled at the will of the operator so as to permit the sashes to be opened respectively from above and below and positively held against being further opened after such adjustment.

A still further object of the invention is the provision of a sash fastener having a toothed bar or keeper on one of the sashes and a sliding and oscillating or rocking locking bolt carried by the other sash and urged to an inactive position relative to the toothed bar, means being provided whereby when the bolt is projected into an active locking position with the bar, it may be positively held against being retracted.

Another object of the invention is the provision of a sash fastener in which the mating elements thereof may be connected to both of the sashes and expeditiously arranged relative to each other whereby to permit the sashes to be freely moved to any point in the height of the window frame in which the sashes are mounted and which will be of such form that when the sashes are closed, the mating elements of the fastener may serve as a positive lock to hold said sashes against opening.

Figure 1 is a front view of a portion of a window frame showing the application of the fastenerto the sashes thereof. Fig. 2 is a vertical section taken on the line 22 of Fig. 1 and illustrating the locking bolt in an inactive position relative of the mating locking bar of the fastener. 'Fig. 3 is a rear view of thelocking bar. Fig. 4 is a transverse section on the line-4% of Fig. 2 showing the bolt in its normal inactive position. Fig. 5 is a similar view showing the bolt in an active locking position. Fig. 6 is a fragmentary detail view of the pin. Fig. 7 is a detail view of a split ring to be used in conjunction with the pin shown in Fig. 6. I

One element of the fastener preferably consistsof a bolt casing 1 fixedlymounted by means of screws or equivalent securing devices to the meeting rail A ofthe lower sash B, and as illustrated, said casing has a length which is slightly less than the widthof the said meeting rail, so lthatthe :outer end of the casing will be spaced fromthe adjacent vertical surface of the meeting rail A, for a purpose to be hereinafter explained. The casing 'is provided with a sliding bolt 3 which is provided at a point beyondthe outer end of the casing with a substantially T-shaped-head 4, whose ends 5 are adapted to normally abut against the mentioned outer end of the said casing, and saidhead having a thickness approximately equal to the distance between the ,vertical outer endf of the casing and the adjacent vertical edge of the meeting rail A. This is in order that the head when interposed between the locking bar 6 and the outer'end of-the casing 1- will not prevent both sashes freely passing each other. I

The locking bar or keeper 6 is secured in operative position by means of screws or the like 8. This bar or keeper is disposed in a rabbetted portion E of the sash frame D and the bar is arranged to extend longitudinally over a vertical re-' cess F in thesash frame. The said bar is formed with a vertical or longitudinal slot 9, the width of which is such as to permit the T-head 4., when in a vertical position, to freely pass through the slot and to be p0- sitioned against the rear surface of the looking bar. v

The locking bar is provided, along both walls of'the slot 9 with inwardly extending aliningteeth 10. The teeth are spaced from the vertical wall G of the recess a distance suflicientto permit the head of the bolt to 'move'upward behind the'teeth 10 when the bolt is forced inward, thus not rendering it necessary to withdraw the bolt entirely from the keeper in order to adjust the sashes vertically. The teeth 'areprovided with inclined surfaces18 whereby the T-head of the bolt may be freely passed over the teeth when the sashes are moved relatively to each other. It is obvious that as the sashes are moved relative to each other, ,a successive locking action of the bolt is set up along different portions of the locking bar and it is impossible to open the sashes from the outside without the bolt 3 be re tracted manually from the inside.

The bolt is movable freely longitudinally in the casing and is also free to oscillate or rock in order to carry the head from a direction parallel to the slot to a direction at right angles thereto of the locking bar. It is therefore necessary to form in the easing a substantially L-shaped longitudinal slot having a relative long longitudinal branch, a short longitudinal branch 15 and a transverse connecting branch 16. The bolt is provided with a pin 17 having a circumferential groove 18 in which is fitted a split locking ring 19. lhis pin is provided with a head 20 which is disposed outwardly of the casing where it is free to be grasped by the operators fingers. This pin passes through the bolt and is free to slide transversely therethrough and normally the pin is disposed in the longitudinal branch 1-1 of the L-shaped slot. A compression spring 21 in the casing is interposed between the pin 17 and the front flange 22 of the casing, and thus the T-shapcd head 4: of the bolt is urged into the position shown in Fig. 2 out of coaction with the keeper, the spring also acting to hold the bolt with its head in a vertical position in alinement with the slot in the keeper.

In locking the two elements of the fastener with each other so as to secure the sashes against movement, the pin 17 is ad vanced in a forward direction against the action of the spring 21, thus advancing the T-head 1 through the slot 9. When the pin 17 abuts against the forward wall 24 of the branch 14:, the pin is rocked toward the right and passed through the slot 16 until it abuts against the wall 25 of the branch 15. At this time, the T-head is approximately positioned against the wall G of the recess F. The pin is then released from the hand of the operator and the spring shifts it to the rear of the branch 15. As stated, the pin 17 is free to slide through the bolt 3 and the casing 1 is provided at a point in a line with the branch 15 with a keeper passage 26 which is adapted to receive the free end 27 of the pin 17. In this manner, the pin 3 is held against being accidentally moved to its inactive position.

While it is described that the sash is recessed to accommodate the locking bar 6, I wish it to be understood that such is not at all essential to a proper correlative association of the difierent members or parts of the device. The bar 6 may, if desired, be placed at the center of the sash and secured thereto in any suitable well known manner 1,14.7,eo44c and the sash not be recessed at all to receive the bar.

What is claimed is 1. A window fastener including an elongated slotted keeper having inwardly projecting teeth on its inner face disposed in series on each side of the slot, and a rotatably mounted bolt coacting therewith, having a T-shaped head whose width is less than the width of the slot and whose length is greater than the width of the slot, and a spring acting to urge the bolt outward from engagement with the keeper.

2. A window fastener comprising an elongated slotted keeper having inwardly projeoting teeth on its inner face, one on each side of the slot, the teeth having their up per edges inclined downward and their lower edges extending perpendicular to the keeper, a rotatably mounted bolt coacting therewith having a T-shaped head whose width is less than the slot and whose length is greater than the width of the slot, and a spring acting to urge the bolt outward from the keeper and yieldingly hold the bolt with its head parallel to the slot.

3. A window fastener comprising an elongated slotted keeper having inwardly projecting teeth on its inner face on each side of the slot, the teeth having their upper faces inclined downward, a rotatably mounted bolt coacting therewith having a T- shaped head whose width is less than the width of the slot and whose length is greater than the width of the slot, and a spring acting to urge the bolt outward from the keeper and rotate the bolt to a position Where it again alines with the slot, and means for holding the bolt forced inward against the action of the spring and with its head at right angles to the length of the slot.

4. A window fastener comprising an elongated slotted keeper having inwardly projecting teeth on its inner face disposed on each side of the slot, a bolt coacting therewith having a T-shaped head, a casing within which the bolt is rotatably mounted, said casing having therein an L-shaped slot having a long and short branch and a transverse connecting portion at the forward end of the branches, a pin on the bolt projecting out through said slot in the casing, and a spring urging said bolt rearward and resisting its rotation in a direction to shift the head into alinement with the slot.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

LOUIS EDGAR BUBENHEU l.

Witnesses:

ARTHUR EINERT, HENRY OoHs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01' Patents, Washington, D. 0. 

